Paper 1

Question 1

What are the 3 types of field that cause objects to interact with each other without making contact?

Answer 1

Magnetic
Electrostatic
Gravitational

Question 2

How can up you use the Geiger mueller tube to compare count- rates from two different radioactive rocks (3 marks)

Answer 2

Put the rocks in front of the tube and measure the count rate separately for the two different rocks
Measure each count for the same time period
Keep source detector the same length away for both rocks
Take background radiation into account.
Repeat readings and take average

Question 3

What happens to wavelength and velocity when the wave goes from air into a glass block?

Answer 3

Wavelength decreases
Velocity decreases

Question 4

What is the frequency equation that may come up in a 3 marker?

Answer 4

Frequency= number of waves counted divided by time